From 90165623a50fa30454c4a2f9bece7af2c611b731 Mon Sep 17 00:00:00 2001 From: Beat Bolli Date: Tue, 16 Feb 2021 19:15:45 +0100 Subject: ASN1: add an internal header to validate Unicode ranges Reviewed-by: Shane Lontis Reviewed-by: Paul Dale (Merged from https://github.com/openssl/openssl/pull/14185) --- include/internal/unicode.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 include/internal/unicode.h (limited to 'include/internal') diff --git a/include/internal/unicode.h b/include/internal/unicode.h new file mode 100644 index 0000000000..3dcdcd2c89 --- /dev/null +++ b/include/internal/unicode.h @@ -0,0 +1,31 @@ +/* + * Copyright 2021 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the Apache License 2.0 (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#ifndef OSSL_INTERNAL_UNICODE_H +# define OSSL_INTERNAL_UNICODE_H +# pragma once + +typedef enum { + SURROGATE_MIN = 0xd800UL, + SURROGATE_MAX = 0xdfffUL, + UNICODE_MAX = 0x10ffffUL, + UNICODE_LIMIT +} UNICODE_CONSTANTS; + +static ossl_unused inline int is_unicode_surrogate(unsigned long value) +{ + return value >= SURROGATE_MIN && value <= SURROGATE_MAX; +} + +static ossl_unused inline int is_unicode_valid(unsigned long value) +{ + return value <= UNICODE_MAX && !is_unicode_surrogate(value); +} + +#endif -- cgit v1.2.3